html {
    font-size: 50px;
}
@no:15;
@media screen and (main-width: 320px) {
    html{
    font-size: 320px / @no;
                }
}
@media screen and (main-width: 360px) {
   html { font-size: 360px / @no;}
}
@media screen and (main-width: 375px) {
    html {
    font-size: 375px / @no; }

}
